Hans Leidekker : msi: Avoid zero size allocations (Valgrind).

[Alexandre Julliard]

Module: wine
Branch: stable
Commit: 3736b7dbce3ba0e3ff1dec03d8e271e2124a1cf6
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=3736b7dbce3ba0e3ff1dec03d8...

Author: Hans Leidekker 
Date:   Tue Mar 28 10:45:56 2017 +0200

msi: Avoid zero size allocations (Valgrind).

Signed-off-by: Hans Leidekker 
Signed-off-by: Alexandre Julliard 
(cherry picked from commit d12728a872b03a537ee6d92789fb6cbd2d86ba1d)
Signed-off-by: Michael Stefaniuc

---

dlls/msi/table.c | 12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)

diff --git a/dlls/msi/table.c b/dlls/msi/table.c
index 2b36091..b364d97 100644
--- a/dlls/msi/table.c
+++ b/dlls/msi/table.c
@@ -422,13 +422,11 @@ static UINT read_table_from_storage( MSIDATABASE *db, MSITABLE *t, IStorage *stg
         goto err;
     }

-    t->row_count = rawsize / row_size;
-    t->data = msi_alloc_zero( t->row_count * sizeof (USHORT*) );
-    if( !t->data )
-        goto err;
-    t->data_persistent = msi_alloc_zero( t->row_count * sizeof(BOOL));
-    if ( !t->data_persistent )
-        goto err;
+    if ((t->row_count = rawsize / row_size))
+    {
+        if (!(t->data = msi_alloc_zero( t->row_count * sizeof(USHORT *) ))) goto err;
+        if (!(t->data_persistent = msi_alloc_zero( t->row_count * sizeof(BOOL) ))) goto err;
+    }

/* transpose all the data */
     TRACE("Transposing data from %d rows\n", t->row_count );